Effect of fluorine in the synergism co-mo via hydrogen spillover on the hydrodesul-phurization of refractory molecules

• A MÉNDEZ ^[1] ; M VILLARROEL ^[2] ; E CAMÚ ^[3] ; F. J GIL-LLAMBÍAS ^[3] ; P ÁVILA ^[4] ; P BAEZA ^[1]
  1. [1] Pontificia Universidad Católica de Valparaíso

     Pontificia Universidad Católica de Valparaíso

     Valparaíso, Chile

     
  2. [2] Universidad Católica Silva Henríquez

     Universidad Católica Silva Henríquez

     Santiago, Chile

     
  3. [3] Universidad de Santiago de Chile

     Universidad de Santiago de Chile

     Santiago, Chile

     
  4. [4] Consejo Superior de Investigación Científica Instituto de Catálisis y Petroleoquímica

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• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 58, Nº. 4, 2013, págs. 2067-2070
• Idioma: inglés
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• Resumen

  • The influence of fluorine concentration on the synergism between Co/γ-Al2O3 and MoAy-Al2O3 stacked beds separated by 3-mm of γ-Al2O3Fx (x = 0 - 2.5%), in the hydrodesulphurization of refractory molecules contained in gasoil, under operating conditions similar to those of industry, was studied. The results shown, that the synergism increases with F content, reaching a maximum at 0.8% of fluorine, which it is related to changes in zero point of charge (ZPC) and acid strength, due to the incorporation of fluorine. The conversion of most refractory molecule reported is favoured by fluorine.